Brake mechanism



GRIFFIN s. AcKLniaorencontra, new Ycnmassrenon free. s. asignar aco., A.

cornnrnnnsnir consisrme or carrier; s. ACKLEY AND HELEN fr. ACKLEY.

Beans rariciANIsM.

applicati@ filed April 24,

To all whom t mag/concern:

Be it known that I, GRIFFIN' S. AoKLEx, a

" citizen of the UnitedStates, and resident of the city of New York, borough of Brookl n, county of Kings, and State of New ork, have invented certain new and useful Improvements -in Brake Mechamsmspof frame, as desired.

" which'the 'following is a specification.

This invention relates'to mechanism for controlling or operating brakes, more particularly car-brakel mechanisms which are operated by means of a -chainvor the like wound on-a'suitable. drum or other member.v

The present invention is an improvement overthose set forth in my previous Patents "Nesi 1,022,561; 1,158,764. and 1,270,762; 0p-

- erating 'on the same general.princlples as The construction by which these objects andothers, which will be apparent fromV a knowledge of the invention, are attained will be fully set forth in the following specification, taken in conjunction with the accompanying drawings, the various combina- 4 tions and arrangements of parts constituting the present invention being more particularly set forth in the appended claims;

Figure 1 of the drawings is a horizontal sectional view of a brake operating mechanism illustrating one embodiment of my invention, this view being taken on the line 1--1 of Fig. 2.

Fig. 2 is a longitudinal axial section thereof.

Fig. 3 is a side elevation thereof, on a reduced scale, showing 'the car platform in vertical section.l

Fig. 4 is an end elevation of Fig., 3.

Fig. 5 is a horizontal section on the line -5-5 of Fig. e.

Fig. 6 is a detail sectional view,v showing a slightly modified form of brake staff.

Fig. 7 is a diagrammatic view showing the. mechanismv arranged `to operate the front and rear truck brakes inv unison.

In the drawings 1 indicates'a portion of Specification of Zl'ietters` Patent.

191e. serial Nn. 292,277.

lthe vplatform of ya car of ordinary type.

l As here shown, my improved brake control mechanism comprises anvopen castin forminga supporting frame andadapte to be secured to the underside ofthe latform as will be presently pointed out.' -hi's frame Patented June 1, 1920.

comprises an upper longitudinal bar2'l1av`- Y ing at one end a depending cylindrical boss 3, a pair of arms 4. projecting'downwardly and rearwardly from this boss, the boss being considered as at the front end onf the frame. f

These arms4 .curve inwardly toward one another and un1te in a bearing member 5 which is disposed under the. bar 2 and. coperates with the latter to provide va bearing for a winding drum, which is in its general construction similar to that described in my t previousl Patent No. 1,270,762 comprising ay pair of spirally grooved cone sections v7 and 8 tapering'outwardly from acentral gear 9 which, in the present instanceyis 'a spul"V gear. These sections have registering lu 'V 10 and 11 formed thereon to receive a bo t 12 lwhereby the chains 13 and'14 are secured to the drum. The gear 9 may have an up'- This drum is suitably fixed on. a vertical shaft 16 having at its upper end a head 17 standing annular ange 15 near its periph-A ery to keep the, chain 13 clear of its teeth.

located in a recess 18 in the upper side of v the bar 2 and passing through suitable apertures in the bar 2 and the bearing 5. and having a' collar 19 fixed on its lower end.

In the embodiment of the invention as shown in Figs. 1 to 4, the chain 13 acts as the winding chain and is connected to the brake in the usual manner, while the' chain -4 14 is fastened to the chain 13 and works in opposition thereto to function as a check chain, the two chains being preferably of the 'same size so that in the event of `breaking of the portion of chain 13, which winds on the drum, the check chain may be temporarily used as a winding chain.

The gear 9 meshes with a vided with a h -ub 21,- whic ported in the boss by means of a collar 22 secured by set screws 23 on the top of the hub 2. and resting in an enlarged recess 24 at the upper end of the opening through the boss, the' collar 22 having a flange 25 which projects over the end of the hub 21 and the bottom part of collar 22 is proy110I inion 2,0, proextends up' vwardly in the boss3, the pinion being supvided with several openings to allow kfor the free lubricating of the rollerbearingv and hub. 1

tion rollers 26 are inserted therebetween, held in 1a. cage 27- of usual construction,

- which rests onthe'top of pinion20.

the `casting or frame under the platform in a manner .'to permit of angular shiftingof the position thereof as desired to give a d1- rect pull from the drum to the brake beam.' Ashere shown, the boss. 3 has segmental yflanges 30 formed on opposite sides thereof: Y land'which are provided with vertical slots 31 concentric to the pinion 20 to receive' bolts 32 which arev passed downwardly throu h the platform 1 and-havel 4'nuts 33 threa ed on' theirlower ends.

faces of the flanges may be formed with ser- The lower rations 34 adapted 4to be engaged by similar serrations on washers 35 interposed between the nuts and theflanges 30. Ay third` bolt .36 `passes through" the platform and throughv a suitable opening in the rear endl Vof the bar 2 and has a nut 37 threaded' on its lower end.- Should it-be desired to shift the casting a fresh hole lis bored inthe car platform at'the desired 'point to accommodate the bolt 364 and the nuts'33 loosened to permit angular movementof the casting.

In the present instance, the bolts 32 pass through ears 38 on a plate39 on the upper side of the carplatform and which has a Sleeve extension 40 projecting downwardly I form. A pawl'47, pivoted on a bolt 48 which through the platform in axial alinement with 'the boss 3; 1Upon this sleeve 40 is. freely mounted a Aratchetvvheel 41 having a `hub 42which extends downwardly into they sleeve; rollerbearings 43, carried in a cage 4 4, being interposed between the sleeve and hub. The hubsf4 2 and '21 have s uareopeningstherethrough 'to receive .t e squared lower 1311d45 4 o f'a brake-staff 46l offusual l passes through the plate 39 and throughy the' i platformv 1, coperates in the usual manner -vwiththe ratchet wheel 41.

Inorder to-insure against` any tendency I of thepull of the brake chain causing any lbinding action between the hub 42 and sleeve 40 I provide a collar 49 which, at its upper end, ts snuglyover the sleeve 40 and at its lower end fits snugly in the recess'24, thereby maintaining at all times a proper .alinement of the sleeve40 and boss 3.. In Fig.` 6 I have shown the invention adapted for use in connection with a brakestaff having an integral ratchet wheel 56;

The portion 57 of the staff immediately" below the ratchet wheel 5.6 is ofequal `diameter to the hub 42 and isinserted intothe sleeve 4Q with the rollers 43 therebetween;

The extreme lower portion 5 8 ofthe staff isl square and is inserted into thel hub 21- o f the pinion 20, the construction being otherwise i operate on the wheels of the front and rear As a feature of the present invention I provide an improved means for mounting trucks in unison. In this arrangement the check chain 1-4is eliminated and a chain 60, which winds on the drumsection, is provided, the chlain-extending in opposite directions -1 and lconnecting tothe brakes, indi#y `cated at61 and `62,',of the front and rearl truck wheels.,A y ToH cause the two chains to wind and unwind in unisonthe direction of winding of either chain on the-drum 6 may be.reversed,`the chainv -13 being here shown reversed, while across cut groove, such as indicated at 63 may lead froma point adjacent either or both of the lugs 10 and'11 to accommodate the chain.

The usual arrangement is to provide for the winding up of the chain by a'right hand t turning ofthe handle but in some'cases .it is desiredto reverse this and .provide for a left hand winding,.wh ich is usually done by changing the drum. `\7Vith.this construction it will be seen that the samedrumcan be used, as its construction provides for ref versing the chain, thereby. providing for the wind up with either aright or left hand turning of the same, in avery ner and without changing the drum.

It will also be noted that the winding faces of the drums are eccentric with refer-` ence to the axis, thereby providing for a decreasing tightens.

What `I claim isz- 1. In a brake mechanism, a framecomprising a top bar adapted to be secured to the platform of a car, a cylindrical boss depending from one'end ofsaid bar, a pair of curved arms extending downwardly and .rearwardly from said boss and uniti-ng to form a bearing, a winding-drum carriedby simple vmanspeed of winding. as the chain.V

the said bar and bearingand having a fixed gear,said drum being adapted to have a brake chainattached thereto, and means carried by said boss for rotating said gear,

said means comprising a pinion located at the lower end of the bossand having a hub projecting upwardly into said boss, a collar secured on the vupper end of said hub, said collar being supported by said boss, 'said hub being adapted to receive'a brakestaff.

2. In a brake mechanism, a frame,a` winding drum comprising a centralI horizontal gear, and taperlng sections on each side thereof, said gear having an upstanding annular flange lnear its purpose set forth.

3. In a brake mechanism, a frame, a winding drum comprising a gear and a grooved periphery, for the direction upon the drum.-

' 4, In'abrake mechanismeJ ltaperingchain receiving section, and means whereby ah'chain may be attached/to said section adj acentits larger end, said section being formed with' a. cross-cut groovel eX- tending from a point adjacent said rmeans whereby a chain maybe wound in either frame, a winding drum having. a 'central gear and tapering grooved sections on opposite sides there-i of, and means whereby a pair of'chains may be secured to the respective sections, one-of said sectionsbeing 'formed with a cross cut either'direction thereon f 5. In a brakelmechanlsm, 1n combination with ak car'platform, a frame securedto said platformand having a cylindricalV boss at. -one end, la geared drum upon the frame, a pinion for' rotating said drum, said' pinionY having a hub projectin `upwardly Ain the said boss, means suppor ng said hub from fits upper end,- `a plate uponuthe carplatform jhaving a dependingsleeve in `axial alinegoove to permit of a chain being wound in unison.

y New York, this ment withi said boss, a ratchet wheel upon said plate andhaving a hubA extendingg downwardly into said sleeve, a collarsur=^ rounding said'sleeve and projecting intoA said boss, a brakestaf passing downward through saidhubs, and a pawimounted on, said lplate 4and adapted to engage said ratchet wheel.

6. In abrakermechanismLa frame', awind-V r ing drum comprising a central gear and tapering grooved sections on'opposite sides thereof, and means whereby a pair of chains maybe secured to the respective sections, 1

one of said sections being formed to permit one of, said chainsto bewound thereon in va reverse direction from the other chain,

said chains extending from said sections in opposite directions and adapted to be operatively connected tothe brakes at opposite ends of the car` and to operate the same in 

